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C/2020 Y3 (ATLAS)
Classification: Comet          SPK-ID: 1003755
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459263.5 (2021-Feb-18.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .986775912507285 2.2518e-05  
a 151.1820846962348 0.2583 au
q 1.999245115354055 1.2473e-05 au
i 83.09695582733269 0.00021742 deg
node 191.4267565738953 0.00014453 deg
peri 342.0437395269306 0.00072361 deg
M .04056887327494348 0.00010465 deg
tp 2459186.986271291703
(2020-Dec-03.48627129)
0.0013843 TDB
period 678967.3981899684
1858.91
1740.1
4.764
d
yr
n .000530216916098931 1.3588e-06 deg/d
Q 300.3649242771156 0.51318 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      123 days  
   first obs. used      2020-12-28  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .60477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-02 23:42:50  

Additional Information
 Earth MOID = 1.03264 au 
 Jupiter MOID = 3.38129 au 
 T_jup = 0.244 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 5.070687089380906E-10 2.569839984189383E-10 2.905960441920144E-8 3.024338784350785E-9 1.475953006078026E-8 4.450215473377887E-9
q 2.569839984189383E-10 1.555653115315997E-10 1.710292650610291E-8 1.763569621169017E-9 8.990294294734609E-9 2.6087764515553E-9
tp 2.905960441920144E-8 1.710292650610291E-8 1.916361544808434E-6 1.932802969705258E-7 9.978074670247193E-7 2.860558347568789E-7
node 3.024338784350785E-9 1.763569621169017E-9 1.932802969705258E-7 2.088868819326E-8 1.01109976851587E-7 3.104923209031391E-8
peri 1.475953006078026E-8 8.990294294734609E-9 9.978074670247193E-7 1.01109976851587E-7 5.236062951186073E-7 1.497027024599428E-7
i 4.450215473377887E-9 2.6087764515553E-9 2.860558347568789E-7 3.104923209031391E-8 1.497027024599428E-7 4.727075102492961E-8

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 14.6   0.5 6 2 parameter fit from 314 observations, autocmod 2.9c
comet total magnitude slope K1 6.75   n/a 6 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2020.9   C/2020 Y3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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